20040280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2267}}^1$

素因数の和:2308

約数の個数: 64

約数和(自身を含む): 51438240

約数和(自身を除く): 31397960

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 221, 260, 340, 442, 520, 680, 884, 1105, 1768, 2210, 2267, 4420, 4534, 8840, 9068, 11335, 18136, 22670, 29471, 38539, 45340, 58942, 77078, 90680, 117884, 147355, 154156, 192695, 235768, 294710, 308312, 385390, 501007, 589420, 770780, 1002014, 1178840, 1541560, 2004028, 2505035, 4008056, 5010070, 10020140, 20040280]

約数ペア:

[(1, 20040280), (2, 10020140), (4, 5010070), (5, 4008056), (8, 2505035), (10, 2004028), (13, 1541560), (17, 1178840), (20, 1002014), (26, 770780), (34, 589420), (40, 501007), (52, 385390), (65, 308312), (68, 294710), (85, 235768), (104, 192695), (130, 154156), (136, 147355), (170, 117884), (221, 90680), (260, 77078), (340, 58942), (442, 45340), (520, 38539), (680, 29471), (884, 22670), (1105, 18136), (1768, 11335), (2210, 9068), (2267, 8840), (4420, 4534)]